Radial-draft gear.



' E. H. SCHMIDT.

RADIAL DRAFT GEAR.

APPLICAHOH HLED MAY 18,-1915.

Patented Dec. 19, 1 916;

E. H SCHMIDT. RADIAL DRAFT GEAR; APPLICATION man MAY 18, m5;

Patented Dec. 19,1916. 2 SflEETS-SH'EET 2.

I nuewfoi @513 aHo'm wu casing, Fig. 7 1s a side elevation thereof,

N T ATES as I EEFI E. I

, ERNEST H. SCHMIDT, E CLEVELAND, OHIO, AssIGN0R' TO THE NATIONALMALLEABLE --CAsTINGs COMPANY, OF CLEV LAND, JOHIO, A coRPoR- TIoNoEOHIO.

RADIAL-DRAFT GEAR.

To all whom it may concern 4 1 Be it known that I, ERNEST H. SCHMIDT,

. a citizen-of the United States, and a resident of Cleveland, Cuyahogacounty, Ohio, have draft gear embodying my invention; F ig. 2 is ahorizontal section thereof, on line IIII of Fig. 1; Fig. 3 is'a detailplan of the forward casing, Fig. F1 is a side. elevation thereof, Fig. 5is a rear endelevation thereof; Fig. 6 is a detail plan of the rear Fig.8 is a rear end elevationthereof; Fig. 9 is a section on the line IXIXof Fig. 1;

- Fig. 10-isa section on line XX of. Fig. 1';

and Fighl'l is a section on line XI,'XI of Fig.1.-

Myinvention relates to radial draft gear and consists in' a draft memberprovided with a pair of telescoping casings, and a shock absorbingmechanism, which has a bufling engagement with one casing and a pullingengagement with the other casing;

My invention also consists in the construction and cooperation ofthepart s which I shall hereinafter, describe and claim.

Referring to the drawings, A indicates the coupler, which is attached toa forward casing B, C indicates the rear casing and D the shockabsorbing container.

The forward casing B has at its forward end a forwardly extendingflaring pocket 2,

adapted to receive couplers of differentlydimensioned shanks within thepocket. The shank pocket 2 is providedupon its top and bottom walls withshoulders 3', adapted to support the shank ofa coupler and hold itlevel, as is shown in Fig. l. The coupler A may be secured in the pocket2 in any suitable manner, such as by the keys 4, bolt 5 and keepers 6,as shown in Fig. 1.

At the rear of the pocket 2 the casing B has an annular portion 7,adapted to receive the forward end of the shock absorbing container D.Extending to the rear of the annular portion 7 is a pair ofhorizontally-arranged arms 8 havingslots 9 in their rear ends forreception of a key 19, by which the arms are secured to the follower ll,

' which normally bears against the curv'ed forward face-ofthe pivotcasting 12. The

The fri f Patented Dec. 19, 1916.

Application filed May 18, 1915. Serial No. 28,815.

slots 9 are elongated to permit the casing B to move rearwardlyrelatively to the key -10 and follower 11 during buifing. shockabsorbing mechanism, which I have shown in the form of a cylindricalcontainer D adapted to contain frictional mechanism,

The

seats at its forward end in the annular portion 7 of the casing B, andhas at its rear end outwardly-extending shoulders 13, with which theforward annularportion 14 of the rear. casing. .C cooperates duringdraft.

The casing Chas two rearw'ardly-extending arms '15, arranged one abovethe other apertured for-pivotal attachment to the.

pivot casting 12, which is secured to the car structure. The arms 15have flanges 16, which extend'about the arms 8 of the casing Bto.prevent spreading of the'latter, as is shown in Figsl 10' and 11. Tomaintain the key "10 in position, a bolt 17 is provided, which extendsthrough the arms 15 of the rear casing C and through the key10, andthereby holds the key against lateral movement.

' Tl1e ;ope ration of the deviceis as follows: In draft the pull istransmitted by the coupler A through the pocket 2 of the for- Wardcasing B to the arms 8 of that casing,

and thence through the key 10 to the follower 11, and the follower 11 isthereby pulled forwardly againstthe resistance of theshock absorbingmechanismD. The container D is prevented from moving forward by theengagement of its shoulders 13 with the rear edge of the ring 14 at theforward end of the rear casing G, which is attached to the pivot casting12. It will, therefore, be seen that under draft the pull from thecoupler-is transmitted to the car' through the pocket 2 by'means' of thekeys 4, to the arms 8, to key 10, to follower 11, to shock absorbingmechanism D, to ring 14 of rear casing. C, to arms 15, and thereby tothe piyot casting and the car. In bufling the rear wall of the couplerpocket 2 abuts against the forward or closed end of the friction case Dand carries it rearwardly. The rear casing C remains stationary and thearms of the forward casing B slide in the slots formed by-theanti-spread flanges 16 of the arms 15. The follower 11 and .key 10remain stationary, the elongated slots 9 in the arms 8 allowing saidarms to travel rear wardly without interference with the key 10. ctionalparts abutting against the follower 11 are held stationary, while thecontainer D, as above described, moves rearwardly over these parts,actuating them frictionally, thereby taking up the shock.

As is shown in Fig. 11, the container D is preferably constructed withflattened sides 18, so that, in assembling, it may be slid forwardlybetween the arms 15 of the casing C with the flattened sides arranged-inline with these arms, so as to permit the shoulders 1-3 to pass theinwardly-extending strengthening flanges 19 on the case C about the bolt17. When the container D has been slid forwardly as just described, itis then rotated 90 degrees to bring its shoulders 13'into engagementwith the rear edges of the ring 14.

The container D is reinforced against bursting stresses by arranging thering let on the rear casing C to overlie the shockabsorbing container Dnear the point at which, it receives thegreatest stress from thecontained frictional parts. The drag of the friction shoes upon thecasing is, therefore, transmitted in draft directly through the case tothe ring 14 of the rear casing, thus relievlng the forward part of thecase D from the greater part of the tensio-nal stress.

The terms and expressions which I have employed are used as terms. ofdescription and not of limitation, and I have no intention, in the useof such terms and expressions, of excluding any mechanical equivalentfor the features shown and described, but recognizethat variousstructural modifications are possible within the scope of the inventionclaimed. I

What I claim is:

1. In a radial draft gear, a forward mem ber connected to the coupler, arear member pivotally connected to the car, a container for a shockabsorbing mechanism cooperating with both members, the said containerhaving outwardly extending lugs engaging -an. inwardly.extending portionof the rear member during draft, and having at its forward end a bearingwith which the forward member cooperates during bufling.

2. In a radial draft gear a forward member connected to the coupler, arear member having rearwardly extending arms pivotally connected to thecar, shock absorbing mechanism, a. follower, the said follower having akey connection with one of said members and being adapted under draft totransmit the pulling stresses to the shock absorbing mechanism, andunder buffing to transmit the bufiing stresses from the shock absorbingmechanism to the car.

3. In a radial draft gear, a forward member connected to the coupler anda rear member connected to the car, and a shock absorbing casingcontained in the rear member and having a pulling engagement therewith,the casing being adapted to be inserted into the rear member from therear and after insertion to be rotated 90 degrees to be brought intopulling engagement therewith.

ERNEST 1-1. SCHMIDT.

